I do not have one to sell, still on the 5s, procrastinating the inevitable. But, yes. They just take the phone to any provider and they will supply them with a SIM card and a plan. SIM activates the phone and off he goes. I just had mine replaced over the weekend, no charge.

Just an FYI - if on budget, maybe a samsung or LG maybe the way to go. Much cheaper - 100-200 range new, opposed to buying someone else's problem for 100$ with no warranty. If iPhone is a must, verizon sells refurbed ones (5s) for around 100$. have him check stores or online.